VEHICLE STABILITY CONTROL SYSTEM Slip Indicator Light Remains ON

DESCRIPTION

The brake actuator assembly (skid control ECU) is connected to the combination meter via CAN communication.

The Slip indicator light blinks during VSC, TRC operation.

If any of the fallowing is defected, the Slip indicator light remains on:

• The brake actuator assembly (skid control ECU) connectors are disconnected from the brake actuator (skid control ECU).

• There is a malfunction in the brake actuator assembly (skid control ECU) internal circuit.

• There is an open in the harness between the combination meter and the brake actuator assembly (skid control ECU).

• The VSC, TRC control system is defective.

  Tech Tips

  In same cases, the intelligent tester is used when the brake actuator assembly (skid control ECU) is abnormal.

WIRING DIAGRAM

Refer to ABS Warning Light Remains ON Click here.

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check if CAN communication system DTCs are output Click here.

      Result
      Result Proceed to DTC is not output A DTC is output B

   
   

   B

   CHECK CAN COMMUNICATION SYSTEM Click here

   A

2. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED

   
   

   1. Check if the brake actuator assembly (skid control ECU) connector is securely connected.

      OK
      The connector is securely connected.

   
   

   NG

   CONNECT CONNECTOR TO ECU CORRECTLY

   OK

3. INSPECT BATTERY

   
   

   1. Check the battery voltage.

      Standard voltage
      11 to 14 V

      Result
      Result Proceed to OK A NG (for 1ND-TV) B NG (for 1NR-FE) C

   
   

   B

   CHECK OR REPLACE CHARGING SYSTEM OR BATTERY Click here

   C

   CHECK OR REPLACE CHARGING SYSTEM OR BATTERY Click here

   A

4. INSPECT BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) (IG TERMINAL)

   
   

   1. Disconnect the A54 or A56 brake actuator assembly (skid control ECU) connector.

   2. Turn the ignition switch to ON.

   3. 

      Text in Illustration

      *A	except LHD with CVT
      *B	for LHD with CVT
      *a	Front view of wire harness connector (to Brake actuator assembly (Skid control ECU))

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      except LHD with CVT Tester Connection Switch Condition Specified Condition A54-34 (IG1) - Body ground Ignition switch ON 11 to 14 V
      for LHD with CVT Tester Connection Switch Condition Specified Condition A56-34 (IG1) - Body ground Ignition switch ON 11 to 14 V

   4. Reconnect the A54 or A56 brake actuator assembly (skid control ECU) connector.

      Result
      Result Proceed to OK A NG (w/o Stop and Start System) B NG (w/ Stop and Start System) C

   
   

   B

   REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)

   C

   GO TO STOP AND START SYSTEM Click here

   A

5. INSPECT BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) (GND1 TERMINAL)

   
   

   1. Turn the ignition switch off.

   2. Disconnect the A54 or A56 brake actuator assembly (skid control ECU) connector.

   3. 

      Text in Illustration

      *A	except LHD with CVT
      *B	for LHD with CVT
      *a	Front view of wire harness connector (to Brake actuator assembly (Skid control ECU))

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      except LHD with CVT Tester Connection Condition Specified Condition A54-1 (GND1) - Body ground Always Below 1 Ω
      for LHD with CVT Tester Connection Condition Specified Condition A56-1 (GND1) - Body ground Always Below 1 Ω

   4. Reconnect the A54 or A56 brake actuator assembly (skid control ECU) connector.

   
   

   NG

   CHECK FOR INTERMITTENT PROBLEMS (GND1 CIRCUIT) Click here

   OK

6. INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Perform Active Test of the combination meter assembly using the intelligent tester Click here.

      OK
      The Slip indicator light turns on or off in accordance with the intelligent tester.

      Result
      Result Proceed to NG A OK (for LHD) B OK (for RHD) C

   
   

   B

   REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

   C

   REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

   A

7. REPLACE COMBINATION METER ASSEMBLY

   
   

   1. Turn the ignition switch off.

   2. Replace the combination meter assembly Click here.

   
   

   NEXT

8. INSPECT COMBINATION METER ASSEMBLY

   
   

   1. Perform Active Test of the combination meter assembly using the intelligent tester Click here.

      OK
      The Slip indicator light turns on or off in accordance with the intelligent tester.

      Result
      Result Proceed to OK A NG (for LHD) B NG (for RHD) C

   
   

   A

   END

   B

   REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

   C

   REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here